DTC P1297 Lexus
No Communication With HVAC Control Module
No Communication With HVAC Control Module
Description
Key on, and a message from a learned ID number was not detected for the five seconds. Modules on the Class 2 circuit monitor for data communications during vehicle operation. When a module receives a message for critical data, the module records the ident
Cause and Solution
HVAC Class 2 circuit is open, shorted to ground or to B+HVAC ignition power circuit has a high resistance conditionHVAC main ground circuit(s) has a high resistance conditionHVAC (module) may have failed and is pulling the circuit low
Video Guide
Diagnostic Info
- DTC Code: P1297
- Brand: Lexus